Technological behaviour and recycling potential of spent foundry sands in clay bricks

Screening of heavy metal containing waste types for use as raw material in Arctic clay-based bricks

“…The only exception of increased mobility if As and Cr were in the discs with raw fly ash. Alonso-Santurde et al (2011) showed that Cr leaching is not dependent on the liquid to solid ratio when incorporating spent foundry sand in bricks. Volatile metals can be released during the firing process (Domínigues et al 2012), which can result in a reduced mobility of these metals in the clay disc, but requires flue gas treatment after the firing, if to be used commercially.…”

Use of Regeneration Products of Moulding Mixtures For Construction and Refractory Materials Manufacturing

“…Technogen Conference Proceedings same time according to the specialists evaluation the MSM regeneration products can be used as silica correcting component of the Portland cement raw mixture, mineral addition when cement grinding, fine aggregate for concrete production and also as a binding content in the artificial ground mixtures and asphalt concrete taking into account their chemical, grain composition and ceramic products [2][3][4][5][6][7].…”

Utilización de nuevas materias primas y residuos industriales para mejorar las posibilidades de uso de los materiales cerámicos del área de Bailén (Jaén)

“…Semiquantitative identification of mineral phases in clays, Por otra parte, los residuos de naturaleza inorgánica formados principalmente por SiO 2 -Al 2 O 3 -CaO, acompañados generalmente por otros óxidos metálicos minoritarios, presentan una composición similar a la de las materias primas cerámicas, por lo que estos residuos pueden pasar a formar parte de la matriz cerámica del producto y adquirir un carác-ter inerte debido a la formación de fases cristalinas y/o a una vitrificación durante el proceso de cocción. Así, es posible conseguir una amplia gama de productos que van desde los materiales vitrocerámicos a las cerámicas refractarias (19)(20)(21)(22)(23)(24)(25). Esta valorización permite un ahorro de materias primas y, en algunas ocasiones, un menor consumo energético para obtener materiales con unas prestaciones optimizadas.…”

“…Therefore, these wastes can constitute the matrix of ceramic materials due to the formation of crystalline phases or to vitrification during the firing process and, thus, giving rise to inertization of the wastes. In this way, it is possible to get a wide range of ceramic products covering from glass-ceramics to refractory ceramics (19)(20)(21)(22)(23)(24)(25). Valuation of these inorganic wastes allows raw materials savings and, sometimes, a lower energy consumption to obtain optimized material properties.…”